Checking The Tmap Sensor (Lp Engine Only); Inspect For Intake Leaks (Lp Engine Only); Replace Pcv Valve And Breather Element - Change (Lp Engine Only); Replace Oxygen Sensor (G643E Engine Only) - Doosan D40S-5 Operation & Maintenance Manual

Maintenance Section
Checking the TMAP Sensor (LP
Engine Only)
1. Verify that the TMAP sensor (2) is mounted tightly
into the manifold adapter (3), with no leakage.
2. If the TMAP is found to be loose, remove the TMAP
retaining screw and the TMAP sensor from the
manifold adapter.
3. Visually inspect the TMAP O-ring seal for damage.
Replace as necessary.
4. Apply a thin coat of an approved silicon lubricant to
the TMAP o-ring seal.
5. Re-install the TMAP sensor into the manifold
adapter and securely tighten the retaining screw.
1
3
2
(1) Adapter-Throttle body, (2) TMAP sensor,
(3) Adapter-Manifold, (4) Throttle body
Inspect for Intake Leaks (LP
Engine Only)
1. Visually inspect the intake manifold, throttle
assembly (4), and manifold adapters (3), for
looseness and leaks. Repair as necessary.
Replace PCV Valve and breather
element - Change (LP Engine Only)
1. Loosen the hose clamps and remove the PCV valve.
2. Assemble new PCV valve and hose.
3. Tighten the hose clamps
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Replace Oxygen Sensor (G643E
Engine Only)
Exhaust Tube
Muffler Ass'y
When indicated by MIL, replace oxygen sensors on
the exhaust tube and muffler assembly.
1. Stop engine and wait until the exhaust pipe and
exhaust pipe is cooled.
2. Disconnect the electrical connector of oxygen
sensor.
3. Remove oxygen sensor.
4. Assemble new oxygen sensor Tightening torque :
45 N•m (32.5 lb•ft)
5. Connect the electrical connector of oxygen sensor.